shrooms turning brown

Kengaroo131

Fish Crazy
a few of my shrooms are turning a little bit brown. not all of them only 4-5 of them they are all on the same rock theres about 8 of them they are green shrooms.all tests cam out normal and stable satlinty is 1.022. so why are they turning a little bit brown?
heres a pic of them.

100_5488-1.jpg
 
It's hard to tell if it's related to the flash bulb, but looks to me like they were bleached and are now regaining their zoozanthellae. If that's the case it's a sign of recovery from stress so let them be. Also, you might consider raising your SG a bit. 1.022 is a bit low for corals. You should try aiming for something closer to 1.024-25. It's not just "salt" your missing, higher SG makes more dissolved minerals available to your corals. Low levels of trace elements can change their appearance.
 
how about my temp. what should that be around for corals? its at about 80-81f is that ok or to warm? about how long do you think it will take for them to regain coler?
 
yeah, they are definitely bleached but the "browning" is a good sign. Temp is fine. Recovery can take months but they are obviously happier than they were. Sit back and watch the tranformation--they will probably go through many stages but could end up being something really spectacular.
 
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